Adam and Colin are aboard The Elysian, cruising towards Italy to see Adam get hitched, and are determined to stay out of trouble…On the first night, a priceless piece of art is stolen from an eccentric old lady. Adam and Colin offer to help recover it, and are convince the thief was one of their fellow dinner guests from earlier in the evening. Can the amateur sleuths reunite the painting with its owner before they dock in Venice? And, with danger lurking around every porthole, will Adam even make it to the altar?